In 2010, Australian military historian Lynette Silver disputed claims made by Wong Sue in his memoirs and said that official archives prove that he "lied". In particular, she questioned Wong Sue's claims that he:

Single-handedly killed a group of Japanese soldiers at Terusan, Borneo in May 1945, thereby saving the life of Lieutenant Don Harlem, as there were no enemy personnel in the area at the time;

Took part in a raid on the Japanese garrison at Pitas on 13 June 1945, as he is not named in records of the action, and;

Witnessed the last Sandakan Death March as he was in hospital when it occurred and was elsewhere when the other marches took place.[7]

In early 2011, Jack Wong Sue's son, Barry, released a report in which he refuted the claims made by Silver against his father.[8][9]

Wong Sue was discharged from the RAAF on 21 January 1946, after which he returned to Perth and subsequently opened a retail store devoted to diving equipment in Midland, the first such store in Western Australia.[10] On 13 September 1958, Wong Sue and his family were injured in a car accident near Kalamunda that resulted in the death of the driver of the other vehicle.[11]

His published works include two books published circa 2001: a memoir of his military service, Blood on Borneo, and a collection of anecdotes regarding a 1963 shipwreck, Ghost of the Alkimos. In 2006, Wong Sue was awarded the Medal of the Order of Australia for "service to the community, particularly through the preservation and recording of military and maritime history."[12] He died in a Perth hospice, aged 84, on 16 November 2009.[13]